package com.xwks.handler;

import com.alibaba.fastjson.JSON;
import com.xwks.common.Result;
import com.xwks.util.RedisUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;
import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

@Component
public class JWTLogoutSuccessHandler implements LogoutSuccessHandler {

    @Autowired
    private RedisUtil redisUtil;

    private final static String KEY = "key:";
    @Override
    public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {


        if (authentication != null) {
            new SecurityContextLogoutHandler().logout(request, response, authentication);
        }
        redisUtil.deleteObject(KEY + authentication.getName());
        response.setContentType("application/json;charset=UTF-8");

        ServletOutputStream outputStream = response.getOutputStream();



        Result result = Result.success("SuccessLogout");

        outputStream.write(JSON.toJSONString(result).getBytes(StandardCharsets.UTF_8));
        outputStream.flush();
        outputStream.close();
    }
}
